One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,12)(3,13,17,8)(4,19,22,9)(5,24,25,10)(6,27,14,11)(15,31,44,41)(16,42,45,32)(18,33,28,38)(20,49,47,34)(21,50,54,35)(23,36,29,39)(26,37,30,40)(43,63,64,56)(46,57,48,58)(51,59,52,60)(53,61,55,62)(1,3,14,18,7,17,6,28)(2,8,27,33,12,13,11,38)(4,20,23,15,22,47,29,44)(5,16,30,46,25,45,26,48)(9,34,36,31,19,49,39,41)(10,32,40,57,24,42,37,58)(21,52,53,43,54,51,55,64)(35,60,61,56,50,59,62,63)(1,4,6,29,7,22,14,23)(2,9,11,39,12,19,27,36)(3,15,28,20,17,44,18,47)(5,21,30,53,25,54,26,55)(8,31,38,34,13,41,33,49)(10,35,40,61,24,50,37,62)(16,43,46,51,45,64,48,52)(32,56,57,59,42,63,58,60)(1,5)(2,10)(3,16,17,45)(4,21)(6,30)(7,25)(8,32,13,42)(9,35)(11,40)(12,24)(14,26)(15,43,44,64)(18,48,28,46)(19,50)(20,51,47,52)(22,54)(23,55)(27,37)(29,53)(31,56,41,63)(33,58,38,57)(34,59,49,60)(36,62)(39,61)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.